How to consume data in EOD PHP with google stats?

I'm having some issues, how to consume data in EOD PHP?

with data string(26) "[[Bengkulu,1],[Banten,1],]"

and this is the code :

<?php 
$js_data = '[';
foreach($statistics as $res) {
    $js_data .= '['. $res['provincename'] .',' . $res['NUMBER'] .'],';
}
$js_data .= ']';
var_dump($js_data);
$this->add_js(<<<EOD
google.charts.load("current", {packages:["corechart"]});
google.charts.setOnLoadCallback(drawChart);
    function drawChart() {
    var data = google.visualization.arrayToDataTable([
        ['Provinsi', 'Jumlah'],
        [Want add data dump here..]
    ]);

    var options = {
        title: 'Data Provinsi',
        pieHole: 0.4,
    };

    var chart = new google.visualization.PieChart(document.getElementById('donutchart'));
    chart.draw(data, options);
    }
EOD
,'embed')
?>